1 // Copyright (C) 2007-2015 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // GEOM GEOMGUI : GUI for Geometry component
24 // File : MeasureGUI_DimensionCreateTool.cxx
25 // Author : Anton POLETAEV, Open CASCADE S.A.S.
27 #include "MeasureGUI_DimensionCreateTool.h"
33 #include <SalomeApp_Application.h>
36 #include <OCCViewer_ViewModel.h>
37 #include <OCCViewer_ViewManager.h>
38 #include <OCCViewer_ViewWindow.h>
39 #include <OCCViewer_ViewPort3d.h>
42 #include <Adaptor3d_CurveOnSurface.hxx>
43 #include <BRep_Tool.hxx>
44 #include <BRepTools.hxx>
45 #include <BRepAdaptor_Curve.hxx>
46 #include <BRepAdaptor_Surface.hxx>
47 #include <BRepBndLib.hxx>
50 #include <gp_Circ.hxx>
51 #include <gp_Sphere.hxx>
52 #include <gp_Cone.hxx>
53 #include <gp_Torus.hxx>
54 #include <gce_MakeDir.hxx>
55 #include <gce_MakePln.hxx>
56 #include <gce_MakeCirc.hxx>
57 #include <GC_MakePlane.hxx>
58 #include <Geom_Circle.hxx>
59 #include <Geom_Plane.hxx>
60 #include <Geom_ElementarySurface.hxx>
61 #include <Geom_Surface.hxx>
62 #include <Geom_ConicalSurface.hxx>
63 #include <Geom_SphericalSurface.hxx>
64 #include <Geom_ToroidalSurface.hxx>
65 #include <Geom_TrimmedCurve.hxx>
66 #include <GeomLib.hxx>
67 #include <GeomLib_Tool.hxx>
68 #include <TopoDS_Shape.hxx>
69 #include <TopoDS_Vertex.hxx>
70 #include <TopoDS_Edge.hxx>
72 #include <TopExp_Explorer.hxx>
73 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
74 #include <TopTools_ListOfShape.hxx>
75 #include <TopTools_ListIteratorOfListOfShape.hxx>
76 #include <TColgp_SequenceOfDir.hxx>
77 #include <V3d_View.hxx>
80 // plane associated with custom data
81 struct PlaneAndSegment
84 PlaneAndSegment(const gp_Pln& thePlane, const MeasureGUI_DimensionCreateTool::Segment& theSegment) : pln(thePlane), seg(theSegment) {}
85 operator gp_Pln () const { return pln; }
86 operator MeasureGUI_DimensionCreateTool::Segment () const { return seg; }
88 MeasureGUI_DimensionCreateTool::Segment seg;
91 typedef NCollection_Sequence<PlaneAndSegment> SeqOfPlnsAndSegments;
93 //=================================================================================
94 // function : Constructor
96 //=================================================================================
97 MeasureGUI_DimensionCreateTool::MeasureGUI_DimensionCreateTool()
99 Settings.DefaultFlyout = 0.0;
100 Settings.ActiveView = NULL;
103 //=================================================================================
104 // function : LengthOnEdge
106 //=================================================================================
107 Handle(AIS_LengthDimension) MeasureGUI_DimensionCreateTool::LengthOnEdge( const GEOM::GeomObjPtr& theMeasuredObj ) const
109 /* ---------------------------------------------------------------- *
110 * get the edge and parent shape *
111 * ---------------------------------------------------------------- */
113 TopoDS_Shape aMeasuredShape;
114 TopoDS_Shape aMainShape;
115 if ( !GEOMBase::GetShape( theMeasuredObj.operator ->(), aMeasuredShape ) )
120 if ( !GEOMBase::GetShape( GetMainShape( theMeasuredObj ).get(), aMainShape ) )
125 /* ------------------------------------------------- */
126 /* check the input geometry */
127 /* ------------------------------------------------- */
129 TopoDS_Edge anEdge = TopoDS::Edge( aMeasuredShape );
131 TopoDS_Vertex aVertex1;
132 TopoDS_Vertex aVertex2;
133 TopExp::Vertices( anEdge, aVertex1, aVertex2 );
135 gp_Pnt aPnt1 = BRep_Tool::Pnt( aVertex1 );
136 gp_Pnt aPnt2 = BRep_Tool::Pnt( aVertex2 );
137 if ( aPnt1.Distance( aPnt2 ) <= Precision::Confusion() )
142 /* ------------------------- *
143 * position the dimension
144 * ------------------------- */
147 BRepBndLib::AddClose( aMainShape, aBnd );
150 TopTools_IndexedDataMapOfShapeListOfShape aRelationMap;
151 TopExp::MapShapesAndAncestors( aMainShape, TopAbs_EDGE, TopAbs_FACE, aRelationMap );
152 const TopTools_ListOfShape& aRelatedFaces = aRelationMap.FindFromKey( anEdge );
154 gp_Vec aFaceN1( gp::Origin(), gp::Origin() );
155 gp_Vec aFaceN2( gp::Origin(), gp::Origin() );
156 gp_Vec aFaceS1( gp::Origin(), gp::Origin() );
157 gp_Vec aFaceS2( gp::Origin(), gp::Origin() );
159 gp_Pnt aMiddlePnt = gp_Pnt( ( aPnt1.XYZ() + aPnt2.XYZ() ) * 0.5 );
161 TopTools_ListIteratorOfListOfShape aFaceIt( aRelatedFaces );
163 // get face side directions
164 if ( aFaceIt.More() )
166 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
169 if ( GetFaceSide( aFace, anEdge, aSideDir ) )
174 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( aFace );
176 Standard_Real aU = 0.0, aV = 0.0;
177 GeomLib_Tool::Parameters( aSurface, aMiddlePnt, Precision::Confusion(), aU, aV );
180 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aU, aV ), Precision::Confusion(), aNorm ) <= 1 )
182 aFaceN1 = aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm;
188 if ( aFaceIt.More() )
190 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
193 if ( GetFaceSide( aFace, anEdge, aSideDir ) )
198 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( aFace );
200 Standard_Real aU = 0.0, aV = 0.0;
201 GeomLib_Tool::Parameters( aSurface, aMiddlePnt, Precision::Confusion(), aU, aV );
204 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aU, aV ), Precision::Confusion(), aNorm ) <= 1 )
206 aFaceN2 = aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm;
211 PositionLength( aBnd, aFaceN1, aFaceN2, aFaceS1, aFaceS2, aPnt1, aPnt2, aPln );
213 /* --------------------------------------------------------- *
214 * construct the dimension for the best selected position
215 * --------------------------------------------------------- */
217 Handle(AIS_LengthDimension) aDimension = new AIS_LengthDimension( anEdge, aPln );
219 aDimension->SetFlyout( Settings.DefaultFlyout );
221 if ( !aDimension->IsValid() )
229 //=================================================================================
230 // function : LengthByPoints
232 //=================================================================================
233 Handle(AIS_LengthDimension) MeasureGUI_DimensionCreateTool::LengthByPoints( const GEOM::GeomObjPtr& theMeasuredObj1,
234 const GEOM::GeomObjPtr& theMeasuredObj2 ) const
236 /* ---------------------------------------------------------------- *
237 * get the edge and parent shape *
238 * ---------------------------------------------------------------- */
240 TopoDS_Shape aMeasuredShape1;
241 TopoDS_Shape aMeasuredShape2;
242 TopoDS_Shape aMainShape;
244 if ( !GEOMBase::GetShape( theMeasuredObj1.operator ->(), aMeasuredShape1 ) )
249 if ( !GEOMBase::GetShape( theMeasuredObj2.operator ->(), aMeasuredShape2 ) )
254 if ( !GEOMBase::GetShape( GetMainShape( theMeasuredObj1 ).get(), aMainShape ) )
259 /* ------------------------------------------------- */
260 /* check the input geometry */
261 /* ------------------------------------------------- */
263 TopoDS_Vertex aVertex1 = TopoDS::Vertex( aMeasuredShape1 );
264 TopoDS_Vertex aVertex2 = TopoDS::Vertex( aMeasuredShape2 );
266 gp_Pnt aPnt1 = BRep_Tool::Pnt( aVertex1 );
267 gp_Pnt aPnt2 = BRep_Tool::Pnt( aVertex2 );
268 if ( aPnt1.Distance( aPnt2 ) <= Precision::Confusion() )
273 /* ------------------------- *
274 * position the dimension
275 * ------------------------- */
278 BRepBndLib::AddClose( aMainShape, aBnd );
280 // check whether the points share same edge
281 TopExp_Explorer anEdgeExp( aMainShape, TopAbs_EDGE, TopAbs_EDGE );
282 for ( ; anEdgeExp.More(); anEdgeExp.Next() )
284 TopoDS_Vertex anEdgeV1;
285 TopoDS_Vertex anEdgeV2;
286 TopExp::Vertices( TopoDS::Edge( anEdgeExp.Current() ), anEdgeV1, anEdgeV2 );
287 gp_Pnt anEdgePnt1 = BRep_Tool::Pnt( anEdgeV1 );
288 gp_Pnt anEdgePnt2 = BRep_Tool::Pnt( anEdgeV2 );
290 if ( aPnt1.Distance( anEdgePnt1 ) <= Precision::Confusion() )
292 if ( aPnt2.Distance( anEdgePnt2 ) <= Precision::Confusion() )
298 if ( aPnt2.Distance( anEdgePnt1 ) <= Precision::Confusion() )
300 if ( aPnt1.Distance( anEdgePnt2 ) <= Precision::Confusion() )
307 gp_Vec aFaceN1( gp::Origin(), gp::Origin() );
308 gp_Vec aFaceN2( gp::Origin(), gp::Origin() );
309 gp_Vec aFaceS1( gp::Origin(), gp::Origin() );
310 gp_Vec aFaceS2( gp::Origin(), gp::Origin() );
313 if ( anEdgeExp.More() )
315 TopoDS_Edge anEdge = TopoDS::Edge( anEdgeExp.Current() );
316 TopTools_IndexedDataMapOfShapeListOfShape aRelationMap;
317 TopExp::MapShapesAndAncestors( aMainShape, TopAbs_EDGE, TopAbs_FACE, aRelationMap );
318 const TopTools_ListOfShape& aRelatedFaces = aRelationMap.FindFromKey( anEdge );
320 gp_Pnt aMiddlePnt = gp_Pnt( ( aPnt1.XYZ() + aPnt2.XYZ() ) * 0.5 );
322 TopTools_ListIteratorOfListOfShape aFaceIt( aRelatedFaces );
324 // get face side directions
325 if ( aFaceIt.More() )
327 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
330 if ( GetFaceSide( aFace, anEdge, aSideDir ) )
335 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( aFace );
337 Standard_Real aU = 0.0, aV = 0.0;
338 GeomLib_Tool::Parameters( aSurface, aMiddlePnt, Precision::Confusion(), aU, aV );
341 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aU, aV ), Precision::Confusion(), aNorm ) <= 1 )
343 aFaceN1 = aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm;
349 if ( aFaceIt.More() )
351 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
354 if ( GetFaceSide( aFace, anEdge, aSideDir ) )
359 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( aFace );
361 Standard_Real aU = 0.0, aV = 0.0;
362 GeomLib_Tool::Parameters( aSurface, aMiddlePnt, Precision::Confusion(), aU, aV );
365 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aU, aV ), Precision::Confusion(), aNorm ) <= 1 )
367 aFaceN2 = aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm;
373 PositionLength( aBnd, aFaceN1, aFaceN2, aFaceS1, aFaceS2, aPnt1, aPnt2, aPln );
375 /* --------------------------------------------------------- *
376 * construct the dimension for the best selected position
377 * --------------------------------------------------------- */
379 Handle(AIS_LengthDimension) aDimension = new AIS_LengthDimension( aPnt1, aPnt2, aPln );
381 aDimension->SetFlyout( Settings.DefaultFlyout );
383 if ( !aDimension->IsValid() )
391 //=================================================================================
392 // function : LengthByParallelEdges
394 //=================================================================================
395 Handle(AIS_LengthDimension) MeasureGUI_DimensionCreateTool::LengthByParallelEdges( const GEOM::GeomObjPtr& theEdge1,
396 const GEOM::GeomObjPtr& theEdge2 ) const
398 TopoDS_Shape aFirstSh;
399 if ( !GEOMBase::GetShape( theEdge1.operator ->(), aFirstSh ) )
404 TopoDS_Shape aSecondSh;
405 if ( !GEOMBase::GetShape( theEdge2.operator ->(), aSecondSh ) )
410 if( aFirstSh == aSecondSh )
413 TopoDS_Edge aFirstEdge = TopoDS::Edge( aFirstSh );
414 TopoDS_Edge aSecondEdge = TopoDS::Edge( aSecondSh );
416 // Build plane through three points
417 BRepAdaptor_Curve aCurve1( aFirstEdge );
418 BRepAdaptor_Curve aCurve2( aSecondEdge );
420 gp_Pnt aPnt1 = aCurve1.Value( 0.1 );
421 gp_Pnt aPnt2 = aCurve1.Value( 0.9 );
422 gp_Pnt aPnt3 = aCurve2.Value( 0.5 );
424 GC_MakePlane aMkPlane( aPnt1, aPnt2, aPnt3 );
425 Handle(Geom_Plane) aPlane = aMkPlane.Value();
427 // check whether it is possible to compute valid dimension
428 Handle(AIS_LengthDimension) aDimension = new AIS_LengthDimension ( aFirstEdge, aSecondEdge, aPlane->Pln() );
430 aDimension->SetFlyout( Settings.DefaultFlyout );
432 if ( !aDimension->IsValid() )
440 //=================================================================================
441 // function : Diameter
443 //=================================================================================
444 Handle(AIS_DiameterDimension) MeasureGUI_DimensionCreateTool::Diameter( const GEOM::GeomObjPtr& theMeasuredObj ) const
446 /* ------------------------------------------------ *
447 * get the shape and its parent (if exist) *
448 * ------------------------------------------------ */
450 TopoDS_Shape aMeasuredShape;
451 TopoDS_Shape aMainShape;
452 if ( !GEOMBase::GetShape( theMeasuredObj.operator ->(), aMeasuredShape ) )
457 if ( !GEOMBase::GetShape( GetMainShape( theMeasuredObj ).get(), aMainShape ) )
463 BRepBndLib::AddClose( aMainShape, aBnd );
465 /* ------------------------------------------------ *
466 * get the dimension construction arguments *
467 * ------------------------------------------------ */
469 Handle(Geom_Circle) aCircle;
471 Standard_Real aPmin = 0, aPmax = 2 * M_PI;
473 gp_Vec aFaceN( gp_Pnt(0.0, 0.0, 0.0), gp_Pnt(0.0, 0.0, 0.0) );
475 switch ( aMeasuredShape.ShapeType() )
479 TopoDS_Face aMeasuredFace = TopoDS::Face(aMeasuredShape);
481 BRepAdaptor_Surface aSurf( aMeasuredFace );
483 Standard_Real aUmin = aSurf.FirstUParameter();
484 Standard_Real aUmax = aSurf.LastUParameter();
485 Standard_Real aVmin = aSurf.FirstVParameter();
486 Standard_Real aVmax = aSurf.LastVParameter();
488 // get arguments of sphere (the sphere should not be cutted at v-center)
489 if ( aSurf.GetType() == GeomAbs_Sphere )
491 if ( aVmax <= Precision::PConfusion() || aVmin >= Precision::PConfusion() )
496 Handle(Geom_Surface) aBasisSurface = Handle(Geom_Surface)::DownCast(
497 aSurf.Surface().Surface()->Transformed( aSurf.Trsf() ) );
499 Handle(Geom_Curve) aCurve = aBasisSurface->VIso( 0.0 );
501 if ( aCurve->IsKind( STANDARD_TYPE( Geom_Circle ) ) )
505 aCircle = Handle(Geom_Circle)::DownCast( aCurve );
507 else if ( aCurve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve ) ) )
509 Handle(Geom_TrimmedCurve) aTrimmedCurve = Handle(Geom_TrimmedCurve)::DownCast( aCurve );
510 aPmin = aTrimmedCurve->FirstParameter();
511 aPmax = aTrimmedCurve->LastParameter();
513 aCircle = Handle(Geom_Circle)::DownCast( aTrimmedCurve );
518 // get arguments of cone
519 if ( aSurf.GetType() == GeomAbs_Cone )
524 gp_Cone aCone = aSurf.Cone();
525 gp_Ax2 anAx2 = aCone.Position().Ax2();
526 aCircle = new Geom_Circle( anAx2, aCone.RefRadius() );
528 aFaceN = aCone.SemiAngle() > 0.0
529 ? anAx2.Axis().Direction()
530 : -anAx2.Axis().Direction();
534 // get arguments of closed torus or cylinder
535 if ( aSurf.GetType() == GeomAbs_Torus || aSurf.GetType() == GeomAbs_Cylinder )
537 Handle(Geom_Surface) aBasisSurface = Handle(Geom_Surface)::DownCast(
538 aSurf.Surface().Surface()->Transformed( aSurf.Trsf() ) );
540 Handle(Geom_Curve) aCurve = aBasisSurface->VIso( (aVmax + aVmin) * 0.5 );
542 if ( aCurve->IsKind( STANDARD_TYPE( Geom_Circle ) ) )
546 aCircle = Handle(Geom_Circle)::DownCast( aCurve );
548 else if ( aCurve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve ) ) )
550 Handle(Geom_TrimmedCurve) aTrimmedCurve = Handle(Geom_TrimmedCurve)::DownCast( aCurve );
551 aPmin = aTrimmedCurve->FirstParameter();
552 aPmax = aTrimmedCurve->LastParameter();
554 aCircle = Handle(Geom_Circle)::DownCast( aTrimmedCurve );
560 // face containing edge?
561 TopExp_Explorer anExp( aMeasuredShape, TopAbs_EDGE );
567 TopoDS_Shape anExpEdge = anExp.Current();
568 if ( anExpEdge.IsNull() )
573 // only a single edge is expected
580 // do not break, go to edge checking
581 aMeasuredShape = anExpEdge;
586 TopoDS_Edge aMeasureEdge = TopoDS::Edge( aMeasuredShape );
588 BRepAdaptor_Curve aCurve(aMeasureEdge);
590 if ( aCurve.GetType() != GeomAbs_Circle )
595 aPmin = aCurve.FirstParameter();
596 aPmax = aCurve.LastParameter();
598 aCircle = new Geom_Circle( aCurve.Circle() );
600 // check if there is an parent face containing the edge
601 TopTools_IndexedDataMapOfShapeListOfShape aShapeMap;
602 TopExp::MapShapesAndAncestors( aMainShape, TopAbs_EDGE, TopAbs_FACE, aShapeMap );
603 const TopTools_ListOfShape& aFaces = aShapeMap.FindFromKey( aMeasureEdge );
605 TopTools_ListIteratorOfListOfShape aFaceIt( aFaces );
606 for ( ; aFaceIt.More(); aFaceIt.Next() )
608 TopoDS_Face aFace = TopoDS::Face( aFaceIt.Value() );
610 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( TopoDS::Face( aFace ) );
612 gp_Pnt aCircCenter = aCircle->Circ().Location();
613 Standard_Real aCircU = 0.0, aCircV = 0.0;
614 GeomLib_Tool::Parameters( aSurface, aCircCenter, Precision::Confusion(), aCircU, aCircV );
617 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aCircU, aCircV ), Precision::Confusion(), aNorm ) > 1 )
622 if ( aNorm.Angle( aCircle->Circ().Axis().Direction() ) > M_PI * 0.25 )
627 aFaceN = gp_Vec( aFace.Orientation() == TopAbs_REVERSED ? -aNorm : aNorm );
633 if ( aCircle.IsNull() )
638 ElCLib::AdjustPeriodic( 0.0, M_PI * 2, Precision::PConfusion(), aPmin, aPmax );
640 /* ------------------------- *
641 * position the dimension
642 * ------------------------- */
648 // diameter for closed circle
649 if ( Abs( ( aPmax - aPmin ) - M_PI * 2 ) <= Precision::PConfusion() )
651 PositionDiameter( aBnd, aFaceN, aCircle->Circ(), aPnt1, aPnt2, aPln );
653 // diameter for half-closed circle
654 else if ( Abs( aPmax - aPmin ) > M_PI )
656 Standard_Real anAnchor = aPmin + ( ( aPmax - aPmin ) - M_PI ) * 0.5;
658 PositionDiameter( aBnd, aFaceN, aCircle->Circ(), anAnchor, aPln );
660 aPnt1 = ElCLib::Value( anAnchor, aCircle->Circ() );
661 aPnt2 = ElCLib::Value( anAnchor + M_PI, aCircle->Circ() );
663 // diameter for less than half-closed circle
666 Standard_Real anAnchor = aPmin + ( aPmax - aPmin ) * 0.5;
668 PositionDiameter( aBnd, aFaceN, aCircle->Circ(), anAnchor, aPln );
670 aPnt1 = ElCLib::Value( anAnchor, aCircle->Circ() );
671 aPnt2 = ElCLib::Value( anAnchor + M_PI, aCircle->Circ() );
674 /* --------------------------------------------------------- *
675 * construct the dimension for the best selected position
676 * --------------------------------------------------------- */
678 gp_Pnt aCircP = aCircle->Circ().Location();
679 gp_Dir aCircN = aCircle->Circ().Axis().Direction();
680 gp_Dir aCircX = gce_MakeDir( aPnt1, aPnt2 );
681 Standard_Real aCircR = aCircle->Circ().Radius();
683 // construct closed circle as base for the diameter dimension
684 Standard_Boolean isReversed = ( ( aPln.Axis().Direction() ^ aCircX ) * aCircN ) < 0.0;
686 gp_Circ aRuledCirc = gce_MakeCirc( gp_Ax2( aCircP, isReversed ? -aCircN : aCircN, aCircX ), aCircR );
688 Handle(AIS_DiameterDimension) aDimension = new AIS_DiameterDimension( aRuledCirc, aPln );
690 // if flyout is extended in tangent direction to circle, the default flyout value is used
691 // if flyout is extended in plane of circle, the zero flyout value is choosen initially
692 Standard_Real aFlyout = aCircN.IsParallel( aPln.Axis().Direction(), Precision::Angular() ) ? 0.0 : Settings.DefaultFlyout;
694 aDimension->SetFlyout(aFlyout);
696 if ( !aDimension->IsValid() )
704 //=================================================================================
705 // function : AngleByTwoEdges
707 //=================================================================================
708 Handle(AIS_AngleDimension) MeasureGUI_DimensionCreateTool::AngleByTwoEdges( const GEOM::GeomObjPtr& theEdge1,
709 const GEOM::GeomObjPtr& theEdge2 ) const
711 /* --------------------------------------------------- */
712 /* get construction and parent shapes */
713 /* --------------------------------------------------- */
715 TopoDS_Shape aShapeEdge1;
716 TopoDS_Shape aShapeMain1;
717 if ( !GEOMBase::GetShape( theEdge1.get(), aShapeEdge1 ) )
721 if ( !GEOMBase::GetShape( GetMainShape( theEdge1 ).get(), aShapeMain1 ) )
726 TopoDS_Shape aShapeEdge2;
727 TopoDS_Shape aShapeMain2;
728 if ( !GEOMBase::GetShape( theEdge2.get(), aShapeEdge2 ) )
732 if ( !GEOMBase::GetShape( GetMainShape( theEdge2 ).get(), aShapeMain2 ) )
737 /* ---------------------------------------------------- */
738 /* check construction edges */
739 /* ---------------------------------------------------- */
741 TopoDS_Edge aFirstEdge = TopoDS::Edge( aShapeEdge1 );
742 TopoDS_Edge aSecondEdge = TopoDS::Edge( aShapeEdge2 );
744 // check whether it is possible to compute dimension on the passed edges
745 Handle(AIS_AngleDimension) aDimension = new AIS_AngleDimension( aFirstEdge, aSecondEdge );
747 if ( !aDimension->IsValid() )
752 const gp_Pnt& aFirstPoint = aDimension->FirstPoint();
753 const gp_Pnt& aSecondPoint = aDimension->SecondPoint();
754 const gp_Pnt& aCenterPoint = aDimension->CenterPoint();
756 gp_Vec aVec1( aCenterPoint, aFirstPoint );
757 gp_Vec aVec2( aCenterPoint, aSecondPoint );
759 Standard_Real anAngle = aVec2.AngleWithRef( aVec1, aDimension->GetPlane().Axis().Direction() );
763 aDimension = new AIS_AngleDimension( aSecondPoint, aCenterPoint, aFirstPoint );
766 aDimension->SetFlyout( Settings.DefaultFlyout );
771 //=================================================================================
772 // function : AngleByThreePoints
774 //=================================================================================
775 Handle(AIS_AngleDimension) MeasureGUI_DimensionCreateTool::AngleByThreePoints( const GEOM::GeomObjPtr& thePoint1,
776 const GEOM::GeomObjPtr& thePoint2,
777 const GEOM::GeomObjPtr& thePoint3 ) const
779 TopoDS_Shape aFirstSh;
780 if ( !GEOMBase::GetShape( thePoint1.operator ->(), aFirstSh ) )
785 TopoDS_Shape aSecondSh;
786 if ( !GEOMBase::GetShape( thePoint2.operator ->(), aSecondSh ) )
791 TopoDS_Shape aThirdSh;
792 if ( !GEOMBase::GetShape( thePoint3.operator ->(), aThirdSh ) )
797 TopoDS_Vertex aFirstVertex = TopoDS::Vertex( aFirstSh );
798 TopoDS_Vertex aSecondVertex = TopoDS::Vertex( aSecondSh );
799 TopoDS_Vertex aThirdVertex = TopoDS::Vertex( aThirdSh );
801 gp_Pnt aPnt1 = BRep_Tool::Pnt( aFirstVertex );
802 gp_Pnt aPnt2 = BRep_Tool::Pnt( aSecondVertex );
803 gp_Pnt aPnt3 = BRep_Tool::Pnt( aThirdVertex );
805 // check whether it is possible to compute dimension on the passed points
806 Handle(AIS_AngleDimension) aDimension = new AIS_AngleDimension( aPnt1, aPnt2, aPnt3 );
808 if ( !aDimension->IsValid() )
813 aDimension->SetFlyout( Settings.DefaultFlyout );
818 //=================================================================================
819 // function : PositionLength
820 // purpose : The method provides preliminary positioning algorithm for
821 // for length dimensions measuring the length between two points.
823 // theBnd [in] - the bounding box of the main shape
824 // theFaceN1 [in] - the normal to a first face of edge length (if any)
825 // theFaceN2 [in] - the normal to a second face of edge length (if any)
826 // theFaceS1 [in] - the side vector from a first face of edge length (if any)
827 // theFaceS2 [in] - the side vector from a second face of edge length (if any)
828 // thePnt1 [in] - the first measured point
829 // thePnt2 [in] - the last measured point
830 // The method selects flyout plane to best match the current
831 // view projection. If edge length is constructed, then the flyout
832 // can go in line with sides of faces, normal to the faces, or
833 // aligned to XOY, YOZ, ZOX planes.
834 //=================================================================================
835 void MeasureGUI_DimensionCreateTool::PositionLength( const Bnd_Box& theBnd,
836 const gp_Vec& theFaceN1,
837 const gp_Vec& theFaceN2,
838 const gp_Vec& theFaceS1,
839 const gp_Vec& theFaceS2,
840 const gp_Pnt& thePnt1,
841 const gp_Pnt& thePnt2,
842 gp_Pln& thePln ) const
844 Standard_Boolean isFace1 = theFaceN1.Magnitude() > Precision::Confusion();
845 Standard_Boolean isFace2 = theFaceN2.Magnitude() > Precision::Confusion();
846 gp_Vec anAverageN( gp_Pnt(0.0, 0.0, 0.0), gp_Pnt(0.0, 0.0, 0.0) );
848 // get average direction in case of two non-sharp angled faces
849 if ( isFace1 && isFace2 )
851 Standard_Boolean isSame = theFaceN1.IsParallel( theFaceN2, Precision::Angular() );
854 gp_Dir aReferenceDir = theFaceN1 ^ theFaceN2;
855 // compute angle between face sides [0 - 2PI]
856 Standard_Real aDirAngle = theFaceN1.AngleWithRef( theFaceN2, aReferenceDir );
859 aDirAngle = ( M_PI * 2.0 ) - aDirAngle;
862 // non-sharp angle, use averaged directio
863 if ( aDirAngle > M_PI * 0.5 )
865 anAverageN = theFaceN1 + theFaceN2;
868 if ( aDirAngle > M_PI )
870 isFace1 = Standard_False;
871 isFace2 = Standard_False;
876 Standard_Boolean isAverage = anAverageN.Magnitude() > Precision::Confusion();
878 SeqOfDirs aFlyoutDirs;
881 aFlyoutDirs.Append( theFaceN1 );
882 aFlyoutDirs.Append( theFaceS1 );
886 aFlyoutDirs.Append( theFaceN2 );
887 aFlyoutDirs.Append( theFaceS2 );
891 aFlyoutDirs.Append( anAverageN );
894 ChooseLengthFlyoutsFromBnd( aFlyoutDirs, thePnt1, thePnt2, theBnd );
896 if ( aFlyoutDirs.IsEmpty() )
901 gp_Dir aPointDir = gce_MakeDir( thePnt1, thePnt2 );
903 // make planes for dimension presentation according to flyout directions
904 SeqOfPlanes aSeqOfPlanes;
905 for ( Standard_Integer aFlyoutIt = 1; aFlyoutIt <= aFlyoutDirs.Length(); ++aFlyoutIt )
907 gp_Pln aPlane( thePnt1, aPointDir ^ aFlyoutDirs.Value( aFlyoutIt ) );
908 aSeqOfPlanes.Append( aPlane );
911 Handle(V3d_View) aView = Settings.ActiveView;
913 thePln = !aView.IsNull()
914 ? SelectPlaneForProjection( aSeqOfPlanes, aView )
915 : aSeqOfPlanes.First();
918 //=================================================================================
919 // function : PositionDiameter
920 // purpose : The method provides preliminary positioning algorithm for
921 // for diameter dimensions measuring the circle.
923 // theBnd [in] - the bounding box of the shape
924 // theFaceN [in] - the circle face normal (can be void)
925 // theCirc [in] - the measured circle
926 // thePnt1 [out] - first dimension point
927 // thePnt2 [out] - second dimension point
928 // thePln [out] - dimension flyout plane
929 // The method selects points on the circle for diameter dimension and
930 // flyout plane to best match the current view projection (if any)
931 // The points are aligned to XOY, YOZ, ZOX planes.
932 // The flyout takes into account bounding box of main shape of face normal
933 // vector. The flyouts tangetial to the circle plane are directed in
934 // accordance with the face normal (if not-null), otherwise the flyouts
935 // are turned to direct to the closest border of bounding box.
936 //=================================================================================
937 void MeasureGUI_DimensionCreateTool::PositionDiameter( const Bnd_Box& theBnd,
938 const gp_Vec& theFaceN,
939 const gp_Circ& theCirc,
942 gp_Pln& thePln ) const
944 // select list of measured segments aligned to projection planes
945 SeqOfDirs aProjectionDirs;
946 aProjectionDirs.Append( gp::DX() );
947 aProjectionDirs.Append( gp::DY() );
948 aProjectionDirs.Append( gp::DZ() );
950 SeqOfSegments aMeasureSegments = GetInPlaneSegments( theCirc, aProjectionDirs );
952 SeqOfPlnsAndSegments aSelectedPlanes;
954 // select in-circle-plane direction for flyout closest to border of bounding box
955 for ( Standard_Integer aSegmentIt = 1; aSegmentIt <= aMeasureSegments.Length(); ++aSegmentIt )
957 const Segment& aSegment = aMeasureSegments.Value(aSegmentIt);
959 Standard_Real anAnchor = ElCLib::Parameter( theCirc, aSegment.First );
961 gp_Pln aSelectedPlane;
963 PositionDiameter( theBnd, theFaceN, theCirc, anAnchor, aSelectedPlane );
965 aSelectedPlanes.Append( PlaneAndSegment( aSelectedPlane, aSegment ) );
968 Handle(V3d_View) aView = Settings.ActiveView;
970 PlaneAndSegment aChoosenParams = !aView.IsNull()
971 ? SelectPlaneForProjection( aSelectedPlanes, aView )
972 : aSelectedPlanes.First();
974 thePnt1 = ((Segment)aChoosenParams).First;
975 thePnt2 = ((Segment)aChoosenParams).Last;
976 thePln = ((gp_Pln)aChoosenParams);
979 //=================================================================================
980 // function : PositionDiameter
981 // purpose : The method provides preliminary positioning algorithm for
982 // for diameter dimensions measuring the circle. The diameter
983 // dimension is bound at anchor point on the circle.
985 // theBnd [in] the bounding box of the shape
986 // theFaceN [in] - the circle face normal (can be void)
987 // theCirc [in] - the measured circle
988 // theAnchorAt [in] - the anchoring parameter
989 // thePln [out] - dimension flyout plane
990 // The method selects flyout plane to best match the current
991 // view projection. The flyout plane can be parallel to circle,
993 //=================================================================================
994 void MeasureGUI_DimensionCreateTool::PositionDiameter( const Bnd_Box& theBnd,
995 const gp_Vec& theFaceN,
996 const gp_Circ& theCirc,
997 const Standard_Real& theAnchorAt,
998 gp_Pln& thePln ) const
1000 gp_Dir aCircN = theCirc.Axis().Direction();
1001 gp_Pnt aCircP = theCirc.Location();
1003 // select tangent direction for flyout closest to border of bounding box
1004 gp_Dir aSelectedTanDir;
1005 if ( theFaceN.Magnitude() < Precision::Confusion() )
1007 SeqOfDirs aTangentDirs;
1008 aTangentDirs.Append( aCircN );
1009 aTangentDirs.Append( -aCircN );
1010 aSelectedTanDir = ChooseDirFromBnd( aTangentDirs, aCircP, theBnd );
1014 aSelectedTanDir = gp_Dir( theFaceN );
1017 gp_Pnt aPnt1 = ElCLib::Value( theAnchorAt, theCirc );
1018 gp_Pnt aPnt2 = ElCLib::Value( theAnchorAt + M_PI, theCirc );
1020 gp_Dir aSegmentDir = gce_MakeDir( aPnt1, aPnt2 );
1022 SeqOfDirs aSegmentDirs;
1023 aSegmentDirs.Append( aCircN ^ aSegmentDir );
1024 aSegmentDirs.Append( -aCircN ^ aSegmentDir );
1025 gp_Dir aSelectedSegDir = ChooseDirFromBnd( aSegmentDirs, aCircP, theBnd );
1027 gp_Pln aTangentFlyout( aCircP, aSegmentDir ^ aSelectedTanDir );
1028 gp_Pln aCoplanarFlyout( aCircP, aSegmentDir ^ aSelectedSegDir );
1030 SeqOfPlanes aSelectedPlanes;
1031 aSelectedPlanes.Append( aTangentFlyout );
1032 aSelectedPlanes.Append( aCoplanarFlyout );
1034 Handle(V3d_View) aView = Settings.ActiveView;
1036 thePln = !aView.IsNull()
1037 ? SelectPlaneForProjection( aSelectedPlanes, aView )
1038 : aSelectedPlanes.First();
1041 //=================================================================================
1042 // function : ChooseLengthFlyoutsFromBnd
1044 //=================================================================================
1045 void MeasureGUI_DimensionCreateTool::ChooseLengthFlyoutsFromBnd( SeqOfDirs& theDirs,
1046 const gp_Pnt& thePnt1,
1047 const gp_Pnt& thePnt2,
1048 const Bnd_Box& theBnd ) const
1050 // compose a list of axis-aligned planes for lying-in flyouts
1051 NCollection_Sequence<gp_Pln> anAAPlanes;
1053 // the axis-aligned planes for flyouts are built from
1054 // three points (P1, P2, and P1 translated in orthogonal
1055 // direction dx, dy, dz)
1056 gp_Dir anAxes[3] = { gp::DX(), gp::DY(), gp::DZ() };
1058 for ( int anIt = 0; anIt < 3; ++anIt )
1060 const gp_Dir& anAxisDir = anAxes[anIt];
1061 gp_Pnt aPnt3 = thePnt1.Translated( gp_Vec( anAxisDir ) );
1062 gce_MakePln aMakePlane( thePnt1, thePnt2, aPnt3 );
1063 if ( !aMakePlane.IsDone() )
1068 anAAPlanes.Append( aMakePlane.Value() );
1071 // find out what is the closest direction outside of the bounding box
1072 NCollection_Sequence<gp_Pln>::Iterator aPlaneIt( anAAPlanes );
1074 gp_Dir aPointDir = gce_MakeDir( thePnt1, thePnt2 );
1076 for ( ; aPlaneIt.More(); aPlaneIt.Next() )
1078 const gp_Pln& aPlane = aPlaneIt.Value();
1080 // transform bounding box to orthogonal coordiantes relative to
1081 // dimension points P1, P2 (x-axis) and plane direction (z-axis),
1082 // where y coordinates will correspond to flyout direction against
1083 // the dimension point line
1084 gp_Ax3 aFlyoutSpace( thePnt1, aPlane.Axis().Direction(), aPointDir );
1086 gp_Trsf aRelativeTransform;
1087 aRelativeTransform.SetTransformation( gp_Ax3(), aFlyoutSpace );
1088 Bnd_Box aRelativeBounds = theBnd.Transformed( aRelativeTransform );
1090 Standard_Real aXmin, aXmax, aYmin, aYmax, aZmin, aZmax;
1091 aRelativeBounds.Get( aXmin, aYmin, aZmin, aXmax, aYmax, aZmax );
1093 gp_Dir aPosFlyout = aPlane.Axis().Direction() ^ aPointDir;
1094 gp_Dir aNegFlyout = aPosFlyout.Reversed();
1096 // select positive or negative flyout
1097 theDirs.Append( Abs( aYmax ) < Abs( aYmin ) ? aPosFlyout : aNegFlyout );
1101 //=================================================================================
1102 // function : ChooseDirFromBnd
1103 // purpose : The method chooses the best direction from the passed list of
1104 // directions, which is closest to the bounding box border.
1106 // theCandidates [in] the list of candidate directions
1107 // thePos [in] the position from where the directions are traced
1108 // theBnd [in] the bounding box of main shape
1109 //=================================================================================
1110 gp_Dir MeasureGUI_DimensionCreateTool::ChooseDirFromBnd( const SeqOfDirs& theCandidates,
1111 const gp_Pnt& thePos,
1112 const Bnd_Box& theBnd ) const
1116 Standard_Real aBestDistance = RealLast();
1118 SeqOfDirs::Iterator anIt( theCandidates );
1119 for ( ; anIt.More(); anIt.Next() )
1121 const gp_Dir& aDir = anIt.Value();
1123 gp_Ax3 aFlyoutSpace( thePos, aDir );
1125 gp_Trsf aRelativeTransform;
1126 aRelativeTransform.SetTransformation( gp_Ax3(), aFlyoutSpace );
1127 Bnd_Box aRelativeBounds = theBnd.Transformed( aRelativeTransform );
1129 Standard_Real aXmin, aXmax, aYmin, aYmax, aZmin, aZmax;
1130 aRelativeBounds.Get( aXmin, aYmin, aZmin, aXmax, aYmax, aZmax );
1132 if ( aYmax < aBestDistance )
1135 aBestDistance = aYmax;
1142 //=================================================================================
1143 // function : SelectPlaneForProjection
1144 // purpose : Select best matching plane in current view projection
1145 //=================================================================================
1146 template <typename TPlane>
1147 TPlane MeasureGUI_DimensionCreateTool::SelectPlaneForProjection( const NCollection_Sequence<TPlane>& thePlanes,
1148 const Handle(V3d_View)& theView ) const
1150 Quantity_Parameter U[3];
1151 Quantity_Parameter N[3];
1152 theView->Up( U[0], U[1], U[2] );
1153 theView->Proj( N[0], N[1], N[2] );
1155 gp_Dir aViewN( (Standard_Real)N[0], (Standard_Real)N[1], (Standard_Real)N[2] );
1156 gp_Dir aViewU( (Standard_Real)U[0], (Standard_Real)U[1], (Standard_Real)U[2] );
1158 TPlane aBestPlane = thePlanes.First();
1160 Standard_Real aBestDotProduct = RealFirst();
1162 for ( Standard_Integer aPlnIt = 1; aPlnIt <= thePlanes.Length(); ++aPlnIt )
1164 const TPlane& aPlane = thePlanes.Value( aPlnIt );
1166 Standard_Real aDotProduct = Abs( ((gp_Pln)aPlane).Axis().Direction() * aViewN );
1168 // preferred plane is "view parallel"
1169 if ( aDotProduct <= aBestDotProduct )
1174 aBestPlane = aPlane;
1176 aBestDotProduct = aDotProduct;
1182 //=================================================================================
1183 // function : GetMainShape
1185 //=================================================================================
1186 GEOM::GeomObjPtr MeasureGUI_DimensionCreateTool::GetMainShape( const GEOM::GeomObjPtr& theShape ) const
1188 // iterate over top-level objects to search for main shape
1189 GEOM::GeomObjPtr aMainShapeIt = theShape;
1190 while ( !aMainShapeIt->IsMainShape() )
1192 aMainShapeIt = aMainShapeIt->GetMainShape();
1194 return aMainShapeIt;
1197 //=================================================================================
1198 // function : GetFaceSide
1200 //=================================================================================
1201 bool MeasureGUI_DimensionCreateTool::GetFaceSide( const TopoDS_Face& theFace, const TopoDS_Edge& theEdge, gp_Dir& theDir ) const
1203 // get correctly oriented edge from main shape
1204 TopoDS_Edge anEdgeFromFace;
1205 TopExp_Explorer anExplorer( theFace.Oriented( TopAbs_FORWARD ), TopAbs_EDGE );
1206 for ( ; anExplorer.More(); anExplorer.Next() )
1208 TopoDS_Edge aCurrentEdge = TopoDS::Edge( anExplorer.Current() );
1209 if ( theEdge.IsSame( aCurrentEdge ) )
1211 anEdgeFromFace = aCurrentEdge;
1216 if ( anEdgeFromFace.IsNull() )
1221 // check out the direction of face extensions from its boundaries at the edge location
1222 // made assumption here that for any linear bounding edge the
1223 // normals are same on the whole length of that edge
1224 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( theFace );
1225 if ( aSurface.IsNull() || !aSurface->IsKind( STANDARD_TYPE(Geom_ElementarySurface) ) )
1230 BRepAdaptor_Curve aSurfCurve( anEdgeFromFace, theFace );
1231 if ( !aSurfCurve.IsCurveOnSurface() )
1236 Standard_Real aHalfRange = ( aSurfCurve.FirstParameter() + aSurfCurve.LastParameter() ) / 2.0;
1238 gp_Pnt aPoint = aSurfCurve.Value( aHalfRange );
1240 Standard_Real aPointU = 0.0;
1241 Standard_Real aPointV = 0.0;
1242 GeomLib_Tool::Parameters( aSurface, aPoint, Precision::Confusion(), aPointU, aPointV );
1245 if ( GeomLib::NormEstim( aSurface, gp_Pnt2d( aPointU, aPointV ), Precision::Confusion(), aNorm ) > 1 )
1250 gp_Vec aTangent = aSurfCurve.DN( aHalfRange, 1 );
1251 if ( aTangent.Magnitude() < Precision::Confusion() )
1256 TopAbs_Orientation anEdgeOrientation = anEdgeFromFace.Orientation();
1257 if ( anEdgeOrientation == TopAbs_REVERSED )
1262 theDir = gp_Dir( aTangent ) ^ aNorm;
1266 //=================================================================================
1267 // function : GetInPlaneSegments
1268 // purpose : The method finds segments crossing the passed circle,
1269 // which lie in the passed planes.
1271 // theCirc [in] the circle to be crossed.
1272 // thePlanes [in] the projection planes crossing the circle.
1273 //=================================================================================
1274 MeasureGUI_DimensionCreateTool::SeqOfSegments
1275 MeasureGUI_DimensionCreateTool::GetInPlaneSegments( const gp_Circ& theCirc,
1276 const SeqOfDirs& thePlanes ) const
1278 SeqOfSegments aResult;
1280 gp_Pnt aCircP = theCirc.Location();
1281 gp_Dir aCircN = theCirc.Axis().Direction();
1282 Standard_Real aCircR = theCirc.Radius();
1284 SeqOfDirs::Iterator anIt( thePlanes );
1285 for ( ; anIt.More(); anIt.Next() )
1287 const gp_Dir& aDir = anIt.Value();
1289 if ( aDir.IsParallel( aCircN, Precision::Angular() ) )
1294 gp_Dir aIntDir = aDir ^ aCircN;
1296 gp_Pnt aPnt1 = gp_Pnt( aCircP.XYZ() - aIntDir.XYZ() * aCircR );
1297 gp_Pnt aPnt2 = gp_Pnt( aCircP.XYZ() + aIntDir.XYZ() * aCircR );
1299 aSegment.First = aPnt1;
1300 aSegment.Last = aPnt2;
1301 aResult.Append( aSegment );